10 Best Knockout Punches 2026 in the United States

The Greenlee 7310SB is a hydraulic knockout punch kit designed to create precise holes ranging from 1/2" to 4" in various materials, including up to 10-gauge mild steel and 12-gauge stainless steel, as well as aluminum, brass, copper, fiberglass, and plastics. Its 11-ton hydraulic power makes punching through tough materials easier than manual alternatives, reducing user effort. The kit includes a hand pump, ram, Slug-Buster and standard round punches, dies, and multiple hydraulic draw studs, all neatly organized in a carrying case with part markings for quick identification.

This setup supports one-person use thanks to its ergonomic, compact design and features like knurled edges on punches for better grip and a dog point tip to prevent cross-threading. The build quality seems solid, and the compatibility with other Greenlee tools adds versatility. However, the kit weighs nearly 46 pounds and is fairly bulky, which could make it less convenient for occasional users or those needing ultra-portable gear. Additionally, while the hydraulic operation simplifies punching, it may require some learning for first-time users.

This product suits electricians or contractors who frequently punch holes in electrical conduit and metal sheets and value durability and a wide punch size range. For casual or light use, the weight and size might be more than necessary.

The Milwaukee M18 18-Volt Lithium-Ion Knockout Tool Kit is designed for professionals needing a reliable, powerful knockout punch tool. With a punch size range from 1/2 inch to 4 inches, it covers a good variety of typical applications, making it suitable for electricians and contractors working on conduit installations. The six-ton force capacity combined with 800 watts of maximum power ensures it can tackle tougher materials like stainless steel, enhancing durability and efficiency during use.

One of its strengths is the cordless design, which allows for greater mobility on job sites. The included two lithium-ion batteries ensure that you have enough power to complete tasks without frequent recharging. The hydraulic mechanism provides smooth operation, which can be a significant advantage over manual tools, reducing the strain during prolonged use.

However, the weight of 48 pounds can be a drawback, especially for users who need to carry it around frequently. While this weight contributes to its durability, it may not be as portable as lighter alternatives. Additionally, the tool’s price point may be higher than basic manual knockout tools, which might be a consideration for those on a tighter budget.

The Milwaukee 2676-23 M18 Forcelogic 10-ton Knockout tool Kit is a cordless knockout punch designed to handle metal surfaces, making it versatile for various professional applications. One of its standout features is its compatibility with a range of punch sizes from 1/2 inch to 4 inches, which provides good flexibility for different projects. The tool's high carbon steel and alloy steel blades ensure durability and longevity, which is essential for heavy-duty tasks. It operates hydraulically, which typically means it requires less physical effort compared to manual punches and can be more efficient for repetitive operations.

The tool is powered by an 18-volt lithium-ion battery, making it convenient to use without the need for a constant power supply, although users should note that batteries are not included in the kit and must be purchased separately. At 7.1 pounds, the tool is relatively lightweight for its category, enhancing ease of use and reducing user fatigue. The package also comes with a five-year warranty, which adds to its appeal by offering long-term protection against defects.

However, the lack of included batteries can be seen as a drawback, especially since the tool requires two product-specific batteries. Additionally, being a cordless tool, users might need to manage battery life and ensure they have charged batteries on hand for extended use. The product's dimensions and weight suggest it is substantial but manageable, with adequate build quality expected from the Milwaukee brand. Users have rated it highly, with an average score of 4.6 out of 5 stars, indicating general satisfaction with its performance and reliability. This knockout punch is well-suited for professionals who need a robust and flexible tool for metalworking and related tasks.